查询词典 calcium

If conditions allow, it is better to use calcium carbonate. Using calcium carbonate as seed crystal, adjusting pH values of solution by alkali, the process of the crystallization of calcium ion in reverse osmosis water under different pH values, seeds and their dosage, also different mixing speeds was examined.

用碳酸钙做晶种，通过加碱调节溶液pH值，考察了不同pH、不同晶种及其投加量、不同搅拌速度下钙离子的结晶过程，确定了pH值是影响钙离子结晶的主要因素，而搅拌速度、晶种及其投加量在一定程度上亦对钙离子结晶有影响。

The smooth and uniform calcium carbonate whiskers with aspect ratio 30-60 were produced without any additive, and the special branch-like calcium carbonate crystal was also prepared surprisingly. Furthermore, the mechanism for the calcium carbonate whiskers growth was discussed.

在未添加任何添加剂的情况下，胜利制得长径比约30～60、表面光滑、大小分布均匀的文石型晶须及形貌独特的树枝状晶体，并对晶须的形成机制进行了分析。

Calcium carbonate whiskers were synthesized by using industrial waste phosphogypsum as raw materials.Calcium carbonate crystal form was characterized by microscope and electron-scanning microscope,XRD and FTIR analysis was employed to investigate the morphology of calcium carbonate whiskers.

论文摘要以废弃磷石膏为原料制备碳酸钙晶须，利用显微镜和扫描电镜观察晶体形貌，晶须样品的晶型用X衍射和红外光谱进行了表征。

The synthetic technologies of calcium carbonate whiskers are reviewed, most of which are carried out in the normal gravity environment by adding some kind of morphology-control additive or needle-like crystal seeds of calcium carbonate supplemented with certain phosphate so as to prompt the crystal of calcium carbonate whiskers to grow in a certain direction to the reaction system.

摘 要：晶须碳酸钙的合成技术备受关注，其中绝大多数方法是在常重力场中，通过向反应物系中添加某种晶形控制剂，或预先添加针状碳酸钙晶种，并辅以能够促使碳酸钙晶体沿单一方向生长的磷酸系助剂。

The scale inhibition performance of PASP-based composite on both calcium carbonate and calcium sulfate was investigated under different conditions.The calcium carbonate crystal samples were characterized by SEM technique,and the results showed that the PASP-based composite cou...

利用扫描电子显微镜对碳酸钙晶型进行了分析，结果表明：聚天冬氨酸复配物可使碳酸钙晶体发生明显的扭曲现象，碳酸钙结晶更加细小分散。

Recently, along with the related research on calcium channels, the function of voltage-dependent calcium channel in epileptics gradually draws researchers' attention, and then calcium antag...

近年来，随着对钙通道的研究的深入，尤其是电压依赖性钙通道在痫性活动中的作用越来越受到重视，钙拮抗剂也迅速成为抗癫痫药物的一个重要组成部分。

During the sintering process, the calcium carbonate reacts with iron ore to from the calcium ferrite as a bonding matrix. The productivity and strength of sinter phase are mainly controlled by the volume and texture of calcium ferrite.

炼钢过程中所用之助熔剂包括了碳酸钙系列与氧化镁系列等矿物，其中以碳酸钙会与铁矿在烧结制程中形成铁酸钙为主的成分，且其化学成分与烧结相的存在会影响烧结矿之产率与强度。

The results showed that the forming of calcium ions was a significant factor affecting the pitch deposition, and the deposition was related to not only the amount of calcium soaps but also their dispersion, and the better the calcium soaps dispersion, the less the deposition, pH value influenced the pitch deposition significantly.

研究结果表明，Ca~(2+)的存在是造成树脂沉积的重要因素，树脂沉积的多少不但与钙皂的多少有关，而且还与其在体系中的分散程度有关，钙皂分散得越好，树脂沉积越少。

Favorable climatic geographic proximity, the region because of high calcium limestone, and its production of calcium hydroxide in the calcium content of 95%~ 98%, and the fineness of 325 mesh in the above, coupled with advanced production technology, production equipment and is responsible for the work attitude, products in medicine, food, paint, desulfurization, skim coat, sewage treatment and other industries have been widely used.

得天时地利之便，由于本地区石灰石含钙量高，其生产的氢氧化钙的钙含量在95%~98%以上，细度在325目以上，加之先进的生产技术、生产设备和负责的工作态度，产品在医药、食品、涂料、脱硫、皮毛脱脂、污水处理等行业得到广泛地运用。

" Adding water to lime yields calcium hydroxide (slaked lime, calcium hydrate, hydrated lime, or caustic lime), which is used in mortar, plaster s, cements, whitewash, hide dehairing, and water softening and purification and as a source of other calcium salts."

往石灰中加水会产生氢氧化钙(熟石灰、水合钙、水合石灰或苛性石灰)，在灰浆、熟石膏、水泥、白涂料、毛皮去皮、氨的回收、水的软化、糖的精炼、石化工业、家禽饲料和食品中都有用途。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。